Photo Gallery | Search for victims in Calaveras and San Joaquin counties

Searchers check well near Linden in San Joaquin County where convicted killer Wesley Shermantine says his old partner in crime, Loren Herzog dumped bodies. The pair were known as the "speed freak killers" for at least four murders committed from 1984-1999.

Human bones found on property formerly owned by Wesley Shermantine's family

Searchers with the Calaveras and San Joaquin County sheriff's departments scour property once owned by the family of convicted serial killer Wesley Shermantine for victims whose bodies have never been found. Another team checks a well near Linden in San Joaquin County where Shermantine claims his partner in crime, Loren Herzog, dumped bodies.